ExampleGroupGroup1

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Method

The lump sum was given as $10 million. The doubling option can be described as y = (2x) where x is the number of days in the month and y is the amount in dollars for that day.

Graph(s)

Solution

The doubling method would be best if the month is 31 days. Otherwise, at 30 days or less, the amount is less than $10 million.

Explanation

The function y = 2(x - 1)models the doubling the previous day's amount each day of the month. The variable x represents the day of the month and y represents the balance for each day of the month.

RUBRIC

Category	Above and Beyond (5 points)	On Target (3 - 4 points)	Needs Improvement (1 - 2 points)	Incomplete (0 Points)
Method	Provided a method for solving the problem that is clear and accurate	Method provided was mostly clear and accurate	Method provided was mostly clear but not accurate	No method was provided or method was not clear or accurate
Graph(s)	Provided all appropriate tables and graphs that match with the given method	Provided most of the necessary tables and graphs correctly	Provided some of the tables and graphs correctly	Included no tables or graphs, or created all tables and graphs incorrectly
Solution	Provided all possible accurate solutions	Provided most of the possible solutions accurately	Provided only one of the possible solutions accurately	Included no solutions or no accurate solutions
Explanation	Included appropriate explanations for each possible solution	Included appropriate explanations for most of the given solutions	Included only one appropriate explanation for the given solutions	Included no explanations or all explanations were not appropriate for the given solutions